BIOL 1902 Lecture Notes - Rumen, Depth Perception, Parasitism

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goldeel903

20 Jul 2012

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Plants also have chemical defences to overcome: some herbivores sequester the toxins. Vein drain strategy to prevent digesting toxins: some use enzymes to counter toxins (mixed function oxidases mfos) Neutralizes plant toxins inside body: some herbivores are specialists, eating only one or two kinds of food. Red-headed pine sawflies eat pine needles: others are generalists (do not need to know what they eat, some animals switch foods for a balanced diet. Fresh leaves and twigs = high carbohydrates, protein, low sodium. Advantages: can be hard to find. Some animals eat dead animals: parasitism, scavenging. Keen eyesight large number of cones. Large eyes more light: glycogen rich rods = sensitive vision, frontal placement = more depth perception. Tiger beetles hunt visually and have large compound eyes. Dragonflies are visual hunters: eye can have 28,000 eyes ommatidia (6 or 7 sensory cells each) Whirligig beetles can see above and below the water at the same time.

Related Questions

Not present in most animal foods
Answer
carbohydrates
lipids
proteins
minerals
vitamins
water

Fiber is a type of ________ provided by ________.
Answer
fat, animals
carbohydrate, plants
protein, plants
carbohydrate, honey
protein, animals

Fiber is important in the diet in
Answer
providing glucose for cells.
stimulating movements of the large intestine.
assisting in fat digestion in the small intestine.
aiding absorption of fats in the small intestine.
providing essential amino acids.

Carbohydrates are typically broken down to
Answer
maltose, the molecule stored for future energy needs.
fructose, the molecule stored for future energy needs.
glucose, the molecule used as the energy source in cells.
glycogen, the molecule used as the energy source in cells.
glucose, the molecule stored for future energy needs.

A serving of food contains 9g carbohydrate, 3g protein, and 5g fat.The total Calories per serving of this food is ______.

73
83
93
103

Which of the following is an incorrect match?
Answer
trans fat - margarine
saturated fat - beef
unsaturated fat - olive oil
saturated fat - cold water fish
unsaturated fat - canola oil

Cholesterol can be synthesized by the body and is eaten in certainfoods.
True
False

When looking at a food label, in order to know how many caloriesyou will ingest, it is important to know total number of caloriesand
Answer
serving size.
% daily value of protein.
number of grams of fat.
number of grams of fiber.
% daily value of sodium.

1.Explain the major evolutionary (survival) advantage for humans and other animals (compared to plants) of storing most of their energy as fat, instead of carbohydrates or proteins. [Answer is not providing insulation or any type of protection or cushioning. Answer is not that animals need more energy than plants.] (2 points)

2.Explain why a change in the primary structure of a protein may alter the tertiary structures. Be specific. (2 points)

3.Explain why prolonged, high fevers cause serious problems in humans. As a part of your answer, you must discuss proteins and their importance to normal cellular functions. (2 points)

coraldolphin670

QUESTION 1

Which of these choices describes a similarity between carbohydrate and protein digestion?

		ATP is required to move carbohydrates and proteins from the lumen of the small intestine into the bloodstream.
		Chemical digestion of carbohydrates and proteins occurs in the stomach.
		Salivary amylase is important in the chemical digestion of carbohydrates and proteins.
		Proteins and carbohydrates are absorbed into the bloodstream in the large intestine.

10 points

QUESTION 2

The pancreas secretes ________ to stimulate glycogen catabolism.

		glucose
		insulin
		glucase
		glucagon

10 points

QUESTION 3

Where are the most mitochondria found in the sperm?

		acrosome
		centriole
		midpiece
		flagellum

10 points

QUESTION 4

Animals that are ______ give live birth.

		oviparous
		viviparous
		ovoviviparous

10 points

QUESTION 5

Ovulation is associated with which of the following events?

		high levels of progesterone
		the presence of the corpus luteum
		the degeneration of the corpus luteum
		high levels of LH and FSH

10 points

QUESTION 6

Which of the following hormones prevent degeneration of the corpus luteum?

		human chorionic gonadotropin (hCG)
		luteinizing hormone (LH)
		follicle-stimulating hormone (FSH)
		oxytocin

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BIOL 1902 Lecture Notes - Rumen, Depth Perception, Parasitism

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